ST. JOHNSBURY — Prosecutors plan to present evidence that the killing of a popular teacher by a couple two years ago was sexually motivated.

The Caledonia County state’s attorney has filed new allegations against Patricia and Allen Prue, the Waterford couple charged with murder in the killing of 33-year-old Melissa Jenkins, of St. Johnsbury, on March 25, 2012.

Among the new allegations filed Jan. 31, the state says evidence shows that Patricia Prue’s computer was used to conduct online searches for “how to get kids to get into your car,” “how to get kids,” “how to kidnap a girl” and “how to rape a girl and not get caught,” The Caledonian Record reported.

The state also says Allen Prue used Facebook to contact young women, including one who was pregnant, even though she asked him to stop because she didn’t know him.

The state has alleged that the Prues felt snubbed after Jenkins declined Allen Prue’s request for a date.

The Prues have pleaded not guilty. They are to be tried separately.

Allen Prue’s lawyer said Tuesday that he had not discussed the allegations with his client but said he believes the filings related to allegations of prior bad conduct by his client likely would not be allowed at trial. Patricia Prue’s attorney did not immediately return a phone call seeking comment.